# Relationship history for MSHA mine 1516450

Current hierarchy: **Tommy  Violet → Magnum Coal Company Llc → Mine No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** James A  Dean et al → Mine No 1; 1985-08-05 to 1996-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Safco Mining Inc → Mine No 1; 1988-08-01 to 1989-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Seals Cecil → Mine No 1; 1988-08-01 to 1989-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Seals Cecil → Safco Mining Inc; 1988-08-01 to 1989-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Martins Fork Coal Company → Mine No 1; 1989-02-15 to 1989-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Seals George-Frank Saylor Et Al → Mine No 1; 1989-02-15 to 1989-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Seals George-Frank Saylor Et Al → Martins Fork Coal Company; 1989-02-15 to 1989-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Limousine Coal Inc → Mine No 1; 1989-03-09 to 1996-07-11; source msha-controller-operator-history
- **controller_controls_operator:** James A  Dean et al → Limousine Coal Inc; 1989-03-09 to 1996-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Kodiak Inc → Mine No 1; 1996-07-12 to 1998-01-11; source msha-controller-operator-history
- **controller_controls_mine:** Dean Arthur → Mine No 1; 1996-07-12 to 1999-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Dean Arthur → Kodiak Inc; 1996-07-12 to 1998-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Magnum Coal Company Llc → Mine No 1; 1998-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tommy  Violet → Mine No 1; 1998-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tommy  Violet → Magnum Coal Company Llc; 1998-01-12 to current/open; source msha-controller-operator-history